Dose response of alanine detectors irradiated with carbon ion beams.
Dose response of alanine detectors irradiated with carbon ion beams.
复制标题
用碳离子束照射的丙氨酸检测器的剂量响应。
DOI：
10.1118/1.3560459
复制
发表时间：
2011
期刊：
影响因子：
3.8
通讯作者：
N. Bassler
中科院分区：
文献类型：
--
作者：
R. Herrmann;O. Jäkel;H. Palmans;P. Sharpe;N. Bassler
目的
PURPOSE
The dose response of the alanine detector shows a dependence on particle energy and type when irradiated with ion beams. The purpose of this study is to investigate the response behavior of the alanine detector in clinical carbon ion beams and compare the results to model predictions.
METHODS
Alanine detectors have been irradiated with carbon ions with an energy range of 89-400 MeV/u. The relative effectiveness of alanine has been measured in this regime. Pristine and spread out Bragg peak depth-dose curves have been measured with alanine dosimeters. The track structure based alanine response model developed by Hansen and Olsen has been implemented in the Monte Carlo code FLUKA and calculations were compared to experimental results.
RESULTS
Calculations of the relative effectiveness deviate less than 5% from the measured values for monoenergetic beams. Measured depth-dose curves deviate from predictions in the peak region, most pronounced at the distal edge of the peak.
CONCLUSIONS
The used model and its implementation show a good overall agreement for quasi-monoenergetic measurements. Deviations in depth-dose measurements are mainly attributed to uncertainties of the detector geometry implemented in the Monte Carlo simulations.